McLean married Rochelle Deanna Karidis, a makeup/hair Stylist, whom he credits for helping him overcome his addiction, on December 17, 2011, in Beverly Hills, California. The rest of the Backstreet Boys, Nick Carter, Howie Dorough, Brian Littrell, and Kevin Richardson were in attendance. On November 27, 2012, the couple welcomed their first child, a daughter named Ava Jaymes. On September 5, 2016, McLean announced on Instagram that his wife was pregnant with their second child, another girl. On March 19, 2017, the couple's second child, whom they named Lyric Dean, was born in Los Angeles.